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Refer to the Exhibit

question 555

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  Refer to the exhibit. Company ABC is a Tier 3 service provider that offers Layer 2 and Layer 3 transport for small/medium enterprise customers in the US. Most of their network is built on Layer 2 MPLS circuits from a Tier 1 provider. Many Company ABC customers are using overlay VPN technologies and independent routing protocols, and they are affected with unacceptable convergence time after every major outage in the core of the Tier 1 provider. Which long-term redesign increases network availability? A)  Customers replace their own overlay VPN service with the Company ABC Layer 3 VPN service. B)  Customers fine tune their routing protocol for faster convergence C)  Company ABC replaces the Layer 2 MPLS circuit from the Tier 1 service provider with dark fiber/DWDM-based transport. D)  Company ABC should adopt a full-mesh POP connectivity. Refer to the exhibit. Company ABC is a Tier 3 service provider that offers Layer 2 and Layer 3 transport for small/medium enterprise customers in the US. Most of their network is built on Layer 2 MPLS circuits from a Tier 1 provider. Many Company ABC customers are using overlay VPN technologies and independent routing protocols, and they are affected with unacceptable convergence time after every major outage in the core of the Tier 1 provider. Which long-term redesign increases network availability?


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